BPA Math Check
Line Measure Savings per Year Savings per Year Savings Per Year Capital Cost Cost for 1000 sf,
KWH, per sf $ for 1000 sf, $ for 1000 sf, Per 1000 sf Attic Access
BPA/ RTF Insulation Math BPA/ RTF
8 Insulate Walls R0 to R11 1.50 $102 N/A 0.97 N/A
9 Insulate Walls R0 to R19 1.03 $70 $647 0.87 $1750
10 Insulate CS Joists R0 to R30 1.28 $87 $507 1.37 $1112
11 Insulate CS Joists R19 to R30 0.25 $17 $507 0.5 $823
12 Insulate Attic Floor R0 to R19 1.51 $103 $668 0.42 $589
13 Insulate Attic Floor R0 to R38 2.07 $141 $741 0.84 $1525
14 Insulate Attic Floor R0 to R49 2.20 $150 $754 1.08 $1827
15 Insulate Attic Floor R30 to R38 0.15 $10 $18 0.18 $463
16 Insulate Attic Floor R30 to R49 0.29 $20 $27 0.42 $650
17 Insulate Attic Floor R38 to R49 0.13 $9 $12 0.24 $420
18 Insulate Attic Floor R19 to R30 0.40 $27 $36 0.24 $839
19 Insulate Attic Floor R19 to R38 0.56 $38 $50 0.42 $1069
20 Insulate Attic Floor R19 to R49 0.69 $47 $63 0.66 $1479